The Golden Cockerel - Rimsky-Korsakov
Nikolai Rimsky-Korsakov (1844-1908), was a Russian composer of the Romantic era.
Rimsky-Korsakov completed The Golden Cockerel in 1907.
To learn more about the composer, visit Nikolai Rimsky-Korsakov on Wikipedia.
For more on the composition, visit The Golden Cockerel - Rimsky-Korsakov on Wikipedia.
Performance
Rimskij-Korsakow: Der goldene Hahn – Suite ∙ hr-Sinfonieorchester ∙ Alain Altinoglu
Excerpts
Rimsky-Korsakov - The Golden Cockerel audio excerpts are available on tromboneexcerpts.org.
Trombone Parts and Full Score
The full score of The Golden Cockerel is available on IMSLP.org.
NOTE: IMSLP provides access to public-domain scores and parts, with copyright status varying by country. Users are responsible for observing applicable copyright laws.
Trombone parts are available on IMSLP.org as follows:
Ranges and clefs by Part

More Rimsky-Korsakov
Trombone Resources playlist of Rimsky-Korsakov with Trombones in the instrumentation.
